EP0995725A1 - Substrat transparent muni d'un empilement de couches minces - Google Patents
Substrat transparent muni d'un empilement de couches minces Download PDFInfo
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- EP0995725A1 EP0995725A1 EP99402586A EP99402586A EP0995725A1 EP 0995725 A1 EP0995725 A1 EP 0995725A1 EP 99402586 A EP99402586 A EP 99402586A EP 99402586 A EP99402586 A EP 99402586A EP 0995725 A1 EP0995725 A1 EP 0995725A1
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- European Patent Office
- Prior art keywords
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- substrate according
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- 239000000758 substrate Substances 0.000 title claims description 44
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 77
- 238000000576 coating method Methods 0.000 claims abstract description 21
- 239000000463 material Substances 0.000 claims abstract description 21
- 229910052751 metal Inorganic materials 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 18
- 239000011248 coating agent Substances 0.000 claims abstract description 17
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000003989 dielectric material Substances 0.000 claims abstract description 13
- 229910052709 silver Inorganic materials 0.000 claims abstract description 10
- 239000004332 silver Substances 0.000 claims abstract description 10
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052581 Si3N4 Inorganic materials 0.000 claims abstract description 6
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 6
- 150000004767 nitrides Chemical class 0.000 claims abstract description 6
- 230000001681 protective effect Effects 0.000 claims abstract description 6
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 5
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 5
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 5
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 4
- 239000000956 alloy Substances 0.000 claims abstract description 4
- 150000002739 metals Chemical class 0.000 claims abstract description 3
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 3
- 150000001247 metal acetylides Chemical class 0.000 claims abstract 2
- 239000011787 zinc oxide Substances 0.000 claims description 36
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 27
- 229910006404 SnO 2 Inorganic materials 0.000 claims description 17
- 239000011521 glass Substances 0.000 claims description 16
- 229910052786 argon Inorganic materials 0.000 claims description 14
- 239000010936 titanium Substances 0.000 claims description 14
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 12
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 11
- 239000011651 chromium Substances 0.000 claims description 10
- 238000009736 wetting Methods 0.000 claims description 10
- 229910052782 aluminium Inorganic materials 0.000 claims description 9
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 5
- 239000010955 niobium Substances 0.000 claims description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
- 229910001887 tin oxide Inorganic materials 0.000 claims description 3
- 229910000599 Cr alloy Inorganic materials 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 229910010413 TiO 2 Inorganic materials 0.000 claims description 2
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 229910001120 nichrome Inorganic materials 0.000 claims description 2
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 2
- 229910001257 Nb alloy Inorganic materials 0.000 claims 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 claims 1
- 150000004706 metal oxides Chemical class 0.000 abstract description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract 2
- 230000002633 protecting effect Effects 0.000 abstract 1
- 239000010410 layer Substances 0.000 description 83
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 6
- 239000001301 oxygen Substances 0.000 description 6
- 229910052760 oxygen Inorganic materials 0.000 description 6
- 230000000052 comparative effect Effects 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 239000012298 atmosphere Substances 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 4
- 230000007935 neutral effect Effects 0.000 description 4
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 239000002346 layers by function Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000011241 protective layer Substances 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000012300 argon atmosphere Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000000151 deposition Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000000171 quenching effect Effects 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- -1 AlN Chemical class 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 238000004378 air conditioning Methods 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004737 colorimetric analysis Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000000475 sunscreen effect Effects 0.000 description 1
- 239000000516 sunscreening agent Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
- C03C17/3618—Coatings of type glass/inorganic compound/other inorganic layers, at least one layer being metallic
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
- C03C17/3626—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer one layer at least containing a nitride, oxynitride, boronitride or carbonitride
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
- C03C17/3644—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the metal being silver
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
- C03C17/34—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions
- C03C17/36—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal
- C03C17/3602—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer
- C03C17/3657—Surface treatment of glass, not in the form of fibres or filaments, by coating with at least two coatings having different compositions at least one coating being a metal the metal being present as a layer the multilayer coating having optical properties
- C03C17/366—Low-emissivity or solar control coatings
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/70—Properties of coatings
- C03C2217/73—Anti-reflective coatings with specific characteristics
- C03C2217/734—Anti-reflective coatings with specific characteristics comprising an alternation of high and low refractive indexes
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2217/00—Coatings on glass
- C03C2217/70—Properties of coatings
- C03C2217/78—Coatings specially designed to be durable, e.g. scratch-resistant
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
- Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
Definitions
- the present invention relates to a transparent substrate, especially glass, provided with a stack of thin layers comprising at least one metallic layer with reflection properties especially low-emitting infrared, placed between two coatings based on dielectric material.
- the main application targeted by the invention is the use of such a substrate for the production of thermal insulation glazing and / or sunscreen.
- a type of thin film stack well known for imparting a transparent substrate with thermal properties, in particular low-emissivity, suitable for the aforementioned required application, consists of a metallic layer, especially of silver, placed between two coatings based on dielectric material such as oxide or nitride metallic.
- This stack is usually made from a succession of deposits made using a vacuum technique such as sputtering, if necessary assisted by a magnetic field.
- An overlay can also be provided in this stack metallic having a role of protective layer in order to avoid the degradation of money.
- the silver layer determines essentially thermal, anti-solar and / or low-emissivity performance of the final glazing, while the layers of dielectric material act above all on the optical aspect of the glazing obtained so interference. In addition, they have a protective role for the layer of money against chemical and / or mechanical attack.
- the object of the invention is then to propose a substrate provided with a stack of thin layers of the aforementioned type, having an appearance improved colorimetric, especially with a more reflective color neutral.
- Layer (s) of the stack the layer (s) of the stack (s) furthest from the substrate, which includes that directly in contact with the surrounding environment, such as air.
- the solution according to the invention provides an advantageous result, but also very unexpected.
- the substrates provided with the stack according to the invention have a color in neutral reflection, even in configurations where the metallic functional layer, such as silver has a significant geometric thickness.
- the glazing obtained by incorporating such substrates is therefore both very aesthetic and very efficient from a thermal point of view.
- the last layer has a high refractive index, it is possible to easily choose a material constituting it which considerably improves the mechanical durability of the stack such as a material based on SnZnO x , or which gives it a "hardenable" character without modifying its properties, such as a material based on Si 3 N 4 .
- the functional metallic layer is advantageously made of silver. Its thickness can be chosen between 7 and 20 nanometers, in particular between 9 and 15 nanometers, when it is desired to obtain glazings with low emissivity and high light transmission (in particular a T L of at least 70 to 80%), particularly for those intended to equip buildings in cold countries.
- the silver layer can be thicker, for example between 20 and 25 nm (which obviously has the consequence of '' have glazing with significantly lower light transmission, for example less than 60%).
- the stack according to the invention comprises a protective metal layer placed immediately above and in contact with the properties layer reflection in the infrared.
- the protective layer provided is advantageously based on a single metal chosen from niobium Nb, titanium Ti, chromium Cr, or nickel Ni or an alloy from at least two of these metals. including an alloy of nickel and chromium (Ni / Cr) and has a thickness geometric less than or equal to 2 nanometers.
- the metal or the alloy constituting the layer can be doped with palladium Pd. It plays its role of "sacrificial" layer in order to protect the functional layer in case of deposition of the next layer by reactive spray.
- the coating based on dielectric material, located below the metal layer with infrared reflection properties is preferably a superposition of at least two layers, in particular two layers of metal oxide or a layer of nitride such as AlN, Si 3 N 4 and a metal oxide layer such as ZnO, SnO 2 , TiO 2 .
- This coating advantageously comprises a wetting layer based on zinc oxide ZnO, optionally doped with aluminum ZnO: Al, in contact with said layer with infrared reflection properties, this coating then advantageously comprises two layers, of which this wetting layers.
- the geometric thickness of the wetting layer is preferably between 5 and 40 nanometers, in particular between 15 and 30 nanometers. With such thicknesses, it can contribute, in addition to its wetting function, to adjusting the optical appearance of the stack in association with the first coating of dielectric material located above the functional layer.
- the wetting layer can be based on partially crystallized zinc oxide.
- Such a layer does not penalize the stacking of a point from an optical point of view in the event of heat treatment undergone by the substrate bending or quenching type carrier.
- the last layer (s) of the stack may also be a layer of metal oxide chosen from one of the following materials: oxide of tin SnO 2 , zinc oxide, mixed tin and zinc oxide SnZnO x . It can also be a layer of metallic nitride, possibly a barrier to the diffusion of oxygen chosen from one of the following materials: silicon nitride Si 3 N 4 , optionally doped with aluminum Si 3 N 4 : Al, nitride aluminum AlN.
- This last layer preferably has a geometric thickness of between 5 and 20 nanometers.
- the layer placed immediately below and in contact with the last layers of the stack has a refractive index n i-1 of less than 1.75.
- This layer is preferably based on silicon oxide SiO 2 or aluminum oxide Al 2 O 3 or a mixture of these two oxides Al 2 O 3 : SiO 2 .
- the layer underlying the layer placed immediately below and in contact with one of the last layers has a refractive index n i-2 close to that of the last layer of the stack , preferably around 2.
- the stack of layers meeting the criteria of the invention is of the type: erre / SnO 2 or Si 3 N 4 : Al or AIN / ZnO or ZnO: Al / Ag / Ti or NiCr / ZnO or SnO 2 / SiO 2 or Al 2 O 3 or SiO 2 : Al 2 O 3 / SnO 2 or ZnO or SnZnO x or AlN or Si 3 N 4 : Al or (AlN / Si 3 N 4 : Al) or (Si 3 N 4 : Al / AlN) or (SnO 2 / SnZnO x )
- the substrate according to the invention is also remarkable in that that it has an emissivity ⁇ of at most 0.05.
- the invention which has just been described is susceptible of numerous applications. It relates in particular to low-emissivity multiple glazing or anti-solar, in particular with double glazing, comprising the substrate previously defined, the stack of layers being on faces 2 and / or 3, and if applicable opposite 5.
- It also relates to a low emissive or anti-solar double glazing comprising at least one previously defined substrate which is remarkable in that it has a light transmission T L of at least 72%.
- Such double glazing comprising two sheets of glass is also remarkable in that it has a coefficient K less than or equal to 1.4W / km 2 when the two sheets of glass are separated by an air gap or less than or equal to 1.1W / Km 2 when the glass sheets are separated by an argon blade.
- Example 1 is a comparative example.
- Example 2 is carried out in accordance with the invention.
- the successive deposits of thin layers were made using a sputtering technique assisted by magnetic field.
- they can be produced by any other technique allowing good control of the thicknesses of layers obtained.
- the substrates on which the stacks of thin layers are clear soda-lime glass substrates of the type of those sold by SAINT-GOBAIN VITRAGE under the name PLANILUX.
- the substrate 1 is surmounted, in accordance with what has been described in patent application EP-0 818 250, with a barrier layer 2 to the diffusion of oxygen and Na + ions , based on SnO 2 , a wetting layer 3 based on zinc oxide ZnO, then a layer 4 in silver, a protective layer 5 in titanium Ti, a layer 6 based zinc oxide ZnO and finally, an oxygen barrier layer 7 based on Si 3 N 4 .
- a barrier layer 2 to the diffusion of oxygen and Na + ions based on SnO 2
- a wetting layer 3 based on zinc oxide ZnO then a layer 4 in silver, a protective layer 5 in titanium Ti, a layer 6 based zinc oxide ZnO and finally, an oxygen barrier layer 7 based on Si 3 N 4 .
- the stack is therefore of the type: Glass / SnO 2 / ZnO / Ag / Ti / ZnO / Si 3 N 4
- Table 1 indicates the thickness in nanometers, corresponding to each layer of the stack, overcoming the 4 mm thick substrate: SnO 2 (2) 17 ZnO (3) 12 Ag (4) 12 Ti (5) 1.2 ZnO (6) 27 If 3 N 4 (7) 20
- the substrate powers and speeds have been adjusted in a manner known per se to obtain the thicknesses desired above.
- Table 2 below indicates respectively the light transmission value T L in percentage, the light reflection value R L also in percentage, the values of a * ® and b * ®, in reflection in the colorimetry system (L, a *, b *), without unit, as well as the emissivity value ⁇ , without unit. All measurements are made with reference to illuminant D 65 .
- EXAMPLE 1 - (monolithic substrate 1) T L 83.1 R L 9.34 a * ® 2.5 b * ® - 12.9 ⁇ 0.032
- the substrate 1 previously defined is then mounted in duplicate glazing with another bare clear glass substrate of geometric thickness equal to 4 mm with an argon intermediate blade 15 mm thick, the stack of thin layers being opposite 3.
- the stack of thin layers shown in FIG. 2 is identical to that of comparative example 1, except that a layer 8 based on SiO 2 with a refractive index equal to 1.45 is deposited between the layer 6 based on zinc oxide ZnO and the last layer of the stack 7 based on silicon nitride Si 3 N 4 .
- the stack therefore has the following sequence: Glass / SnO 2 / ZnO / Ag / Ti / ZnO / SiO 2 / Si 3 N 4
- the layer 8 based on SiO 2 according to the invention has a thickness of 17 nm.
- the other layers have the same thicknesses as those relating to Comparative Example 1, except that of the thickness of the Si 3 N 4 overlayer which is here equal to 12 nm.
- This layer 8 based on SiO 2 was deposited by reactive plasma assisted spraying in an argon / oxygen atmosphere at a pressure of approximately 1.5 ⁇ 10 ⁇ 3 mbar.
- Table 4 indicates respectively the values T L , R L , a * ®, b * ® and ⁇ of the monolithic substrate 1 relating to this example.
- This substrate 1 is then mounted to double glazing with another clear glass substrate of the same thickness, equal to 4 mm with a blade 15 mm argon interlayer, the stack according to the invention being in side 3 of this double glazing.
- Table 5 below shows the same characteristics T L , R L , a * ®, b * ®, ⁇ as well as the value of the coefficient K in W / Km 2 of the double glazing.
- the stack according to the invention is able to undergo treatments thermal bending and / or quenching without degrading.
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- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Surface Treatment Of Glass (AREA)
- Laminated Bodies (AREA)
- Optical Elements Other Than Lenses (AREA)
- Window Of Vehicle (AREA)
- Preparing Plates And Mask In Photomechanical Process (AREA)
- Hybrid Cells (AREA)
Abstract
Description
erre/SnO2 ou Si3N4:Al ou AIN/ZnO ou ZnO:Al/Ag/Ti ou NiCr/ZnO ou SnO2/SiO2 ou Al2O3 ou SiO2:Al2O3/SnO2 ou ZnO ou SnZnOx ou AlN ou Si3N4:Al ou (AlN/Si3N4:Al) ou (Si3N4:Al/AlN) ou (SnO2/SnZnOx)
Verre/SnO2/ZnO/Ag/Ti/ZnO/Si3N4
| SnO2 | (2) | 17 |
| ZnO | (3) | 12 |
| Ag | (4) | 12 |
| Ti | (5) | 1,2 |
| ZnO | (6) | 27 |
| Si3N4 | (7) | 20 |
- La couche 2 à base de SnO2 a été déposée à l'aide d'une cible d'étain, sous une pression de 1,5 x 10-3 mbar, dans une atmosphère argon/O2,
- Les couches 3 et 6 à base d'oxyde de zinc ZnO ont été déposées à l'aide d'une cible en zinc, sous une pression de 8 x 10-3 mbar, dans une atmosphère d'argon/oxygène,
- La couche 4 en argent a été déposée à l'aide d'une cible en argent, sous une pression de 8 x 10-3 mbar, dans une atmosphère d'argon,
- La couche 5 en Ti a été déposée à l'aide d'une cible en titane, sous une pression de 8 x 10-3 mbar, dans une atmosphère d'argon,
- La couche 7 en Si3N4 a été déposée à l'aide d'une cible en silicium dopé à 8% d'aluminium, sous une pression de 8 x 10-3 mbar, dans une atmosphère d'argon/azote.
| EXEMPLE 1 - (substrat 1 monolithique) | |
| TL | 83,1 |
| RL | 9,34 |
| a*® | 2,5 |
| b*® | - 12,9 |
| ε | 0,032 |
| EXEMPLE 1 - (double vitrage) | |
| TL | 75,6 |
| RL | 15,6 |
| a*® | 0,5 |
| b*® | - 7,7 |
| ε | 0,032 |
| K | 1,09 |
Verre/SnO2/ZnO/Ag/Ti/ZnO/SiO2/Si3N4
| EXEMPLE 2 - (monolithique) | |
| TL | 82,8 |
| RL | 9,3 |
| a*® | 3,0 |
| b*® | - 6,0 |
| ε | 0,032 |
| EXEMPLE 2 - (double vitrage) | |
| TL | 75,3 |
| RL | 15,7 |
| a*® | 0,9 |
| b*® | - 3,3 |
| ε | 0,032 |
| K | 1,09 |
- l'empilement conforme à l'invention confère au substrat verrier un meilleur aspect colorimétrique, avec une couleur en réflexion plus neutre, ce qui est corroboré par des valeurs de a* et b* très faibles,
- cette amélioration sur le plan optique ne s'est pas faite au détriment des performances thermiques.
Claims (20)
- Substrat transparent, notamment en verre, muni d'un empilement de couches minces comportant au moins une couche métallique à propriétés de réflexion dans l'infrarouge, notamment bas-émissive, disposée entre deux revêtements à base de matériau diélectrique, caractérisé en ce que le revêtement à base de matériau diélectrique au-dessus de la couche métallique comporte la séquence de couches déposées dans l'ordre suivant :a) couche(s) à matériau(x) d'indice de réfraction ni-2 d'au plus 2,2 ;b) couche(s) à matériau(x) d'indice de réfraction ni-1 inférieur d'au moins 0,3 à celui de la ou les dernière(s) couche(s) ni ;c) dernière(s) couche(s) à matériau(x) d'indice de réfraction ni sensiblement égal à ni-2.
- Substrat selon la revendication 1, caractérisé en ce que la couche métallique à propriétés de réflexion dans l'infrarouge est à base d'argent Ag.
- Substrat selon la revendication 1 ou 2, caractérisé en ce que la couche métallique à propriétés de réflexion dans l'infrarouge est directement en contact avec le revêtement à base de matériau diélectrique sous-jacent.
- Substrat selon l'une des revendications 1 à 3, caractérisé en ce que la couche métallique à propriétés de réflexion dans l'infrarouge a une épaisseur géométrique comprise entre 7 et 20 nanomètres, notamment entre 9 et 15 nanomètres de manière à lui conférer des propriétés de bas-émissivité ou comprise entre 20 et 25 nanomètres de manière à lui conférer des propriétés anti-solaires.
- Substrat selon l'une des revendications précédentes, caractérisé en ce qu'il comporte une couche métallique de protection placée immédiatement au-dessus et au contact de la couche à propriétés de réflexion dans l'infrarouge.
- Substrat selon la revendication 5, caractérisé en ce que ladite couche métallique de protection est à base d'un métal unique choisi parmi le niobium Nb, le titane Ti, le chrome Cr ou le nickel Ni ou d'un alliage d'au moins deux de ces métaux, notamment d'un alliage de niobium et de chrome (Nb/Cr) ou de nickel et de chrome (Ni/Cr) et en ce qu'elle a une épaisseur géométrique de préférence inférieure ou égale à 2 nanomètres.
- Substrat selon l'une des revendications précédentes, caractérisé en ce que le revêtement à base de matériau diélectrique situé en dessous de la couche métallique à propriétés de réflexion dans l'infrarouge est une superposition d'au moins deux couches, notamment deux couches en oxyde métallique ou une couche en nitrure comme AlN, Si3N4 et une couche en oxyde métallique comme ZnO, SnO2, TiO2 avec de préférence un contact direct entre ce revêtement en diélectrique et la couche métallique à propriétés dans l'infrarouge.
- Substrat selon la revendication 7, caractérisé en ce que le revêtement à base de matériau diélectrique, situé en dessous de la couche métallique à propriétés de réflexion dans l'infrarouge, comporte une couche de mouillage à base d'oxyde de zinc ZnO, éventuellement dopé à l'aluminium ZnO:Al, au contact de ladite couche à propriétés de réflexion dans l'infrarouge, le revêtement comprenant de préférence deux couches dont cette couche de mouillage.
- Substrat selon la revendication 8, caractérisé en ce que ladite couche de mouillage a une épaisseur géométrique comprise entre 5 et 40 nanomètres, notamment entre 15 et 30 nanomètres.
- Substrat selon l'une des revendications 8 ou 9, caractérisé en ce que la couche de mouillage est à base d'oxyde de zinc au moins en partie cristallisé.
- Substrat selon l'une quelconque des revendications précédentes, caractérisé en ce que la dernière couche de l'empilement est une couche choisie parmi l'un des matériaux suivants : nitrure de silicium Si3N4, éventuellement dopé à l'aluminium Si3N4:Al, nitrure d'aluminium AlN, oxyde d'étain SnO2, oxyde mixte d'étain et de zinc SnZnOx, carbures tels que SiC, TiC, CrC, TaC.
- Substrat selon l'une quelconque des revendications précédentes, caractérisé en ce que la dernière couche de l'empilement a une épaisseur géométrique comprise entre 5 et 20 nanomètres.
- Substrat selon l'une quelconque des revendications précédentes, caractérisé en ce que la couche placée immédiatement en dessous et au contact d'une des dernières couches de l'empilement présente un indice de réfraction ni-1 inférieur à 1,75.
- Substrat selon l'une quelconque des revendications précédentes. caractérisé en ce que la couche placée immédiatement en dessous et au contact d'une des dernières couches est à base d'oxyde de silicium SiO2 ou d'oxyde d'aluminium Al2O3 ou d'un mélange de ces deux oxydes Al2O3:SiO2.
- Substrat selon l'une quelconque des revendications précédentes, caractérisé en ce que la couche sous-jacente à la couche placée immédiatement en dessous et au contact d'une des dernières couches de l'empilement présente un indice de réfraction ni-2 proche de celui ni de la dernière couche de l'empilement, de préférence de l'ordre de 2.
- Substrat selon l'une quelconque des revendications précédentes, caractérisé en ce que l'empilement est le suivant :
Verre/SnO2 ou Si3N4:Al ou AIN/ZnO ou ZnO:Al/Ag/Ti ou NiCr/ZnO ou SnO2/SiO2 ou Al2O3 ou SiO2:Al2O3/SnO2 ou ZnO ou SnZnOx ou AlN ou Si3N4:Al ou (AlN/Si3N4:Al) ou (Si3N4:Al/AlN) ou (SnO2/SnZnOx) - Substrat selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il présente une émissivité ε d'au plus 0,05.
- Vitrage multiple bas-émissif ou anti-solaire, notamment double vitrage, comportant le substrat selon l'une quelconque des revendications précédentes, l'empilement de couches minces étant en faces 2 et/ou 3, et le cas échéant en face 5.
- Double vitrage bas-émissif comportant au moins un substrat selon l'une quelconque des revendications 1 à 17, caractérisé en ce qu'il présente une transmission lumineuse TL d'au moins 72%.
- Double vitrage selon la revendication 19 comportant deux feuilles de verre, caractérisé en ce qu'il présente un coefficient K inférieur ou égal à 1,4W/K.m2 lorsque les deux feuilles de verre sont séparées par une lame d'air, ou inférieur ou égal à 1,1W/K.m2 lorsque les deux feuilles de verre sont séparées par une lame d'argon.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9813249 | 1998-10-22 | ||
| FR9813249A FR2784984B1 (fr) | 1998-10-22 | 1998-10-22 | Substrat transparent muni d'un empilement de couches minces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0995725A1 true EP0995725A1 (fr) | 2000-04-26 |
| EP0995725B1 EP0995725B1 (fr) | 2007-01-03 |
Family
ID=9531865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP99402586A Expired - Lifetime EP0995725B1 (fr) | 1998-10-22 | 1999-10-20 | Substrat transparent muni d'un empilement de couches minces |
Country Status (9)
| Country | Link |
|---|---|
| US (1) | US6355334B1 (fr) |
| EP (1) | EP0995725B1 (fr) |
| JP (1) | JP4824150B2 (fr) |
| AT (1) | ATE350355T1 (fr) |
| CA (1) | CA2286441C (fr) |
| DE (1) | DE69934647T2 (fr) |
| ES (1) | ES2281162T3 (fr) |
| FR (1) | FR2784984B1 (fr) |
| PL (1) | PL193605B1 (fr) |
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| EP1751073B2 (fr) † | 2004-04-01 | 2022-01-05 | Vitro, S.A.B. de C.V. | Empilement de revetements comprenant une couche de revetement anticorrosion |
| WO2007101963A3 (fr) * | 2006-03-06 | 2008-01-31 | Saint Gobain | Substrat muni d'un empilement a proprietes thermiques |
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| US8420207B2 (en) | 2006-03-06 | 2013-04-16 | Sanit-Gobain Glass France | Substrate comprising a stack having thermal properties |
| CN101395000B (zh) * | 2006-03-06 | 2013-09-25 | 法国圣戈班玻璃厂 | 被提供有热性能的叠层的基材 |
| FR2898122A1 (fr) * | 2006-03-06 | 2007-09-07 | Saint Gobain | Substrat muni d'un empilement a proprietes thermiques |
| EP2792650A1 (fr) | 2007-01-05 | 2014-10-22 | Saint-Gobain Glass France | Procédé de dépôt de couche mince et produit obtenu |
| DE202008018514U1 (de) | 2007-01-05 | 2014-10-30 | Saint-Gobain Glass France | Material |
| EP2792651A1 (fr) | 2007-01-05 | 2014-10-22 | Saint-Gobain Glass France | Procede de depot de couche mince et produit obtenu |
| WO2008096089A2 (fr) | 2007-01-05 | 2008-08-14 | Saint-Gobain Glass France | Procede de depot de couche mince et produit obtenu |
| DE202008018513U1 (de) | 2008-01-04 | 2014-10-31 | Saint-Gobain Glass France | Dispositif |
| CN113480193A (zh) * | 2021-08-20 | 2021-10-08 | 重庆东玲光学元件有限公司 | 一种用于光学玻璃表面的复合膜层及其制备方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| PL336179A1 (en) | 2000-04-25 |
| EP0995725B1 (fr) | 2007-01-03 |
| JP4824150B2 (ja) | 2011-11-30 |
| CA2286441C (fr) | 2009-06-16 |
| JP2000233947A (ja) | 2000-08-29 |
| CA2286441A1 (fr) | 2000-04-22 |
| ATE350355T1 (de) | 2007-01-15 |
| FR2784984B1 (fr) | 2001-10-26 |
| ES2281162T3 (es) | 2007-09-16 |
| DE69934647D1 (de) | 2007-02-15 |
| PL193605B1 (pl) | 2007-02-28 |
| US6355334B1 (en) | 2002-03-12 |
| DE69934647T2 (de) | 2007-10-18 |
| FR2784984A1 (fr) | 2000-04-28 |
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